Specialist in lead processing: lead casting, CNC machining, welding and painting for radiation protection and apparatus engineering.
Alfred Herrmann Apparatebau GmbH
Calw-StammheimNew on Amplifa
About Alfred Herrmann Apparatebau
Alfred Herrmann Apparatebau GmbH is a master craft business from Calw-Stammheim in the Black Forest with over 70 years of experience in lead and metal processing. The core competence lies in the processing of lead and the manufacture of X-ray cabins: lead is cast in two melting furnaces each with a capacity of approx. 800 kg (approx. 130,000 kg per year) and then machined on modern CNC milling machines and CNC lathes. Lead sheets in thicknesses from 0.5 to 100 mm are cut, bent, welded, soldered or professionally bonded to steel and mechanically joined. In addition, the company offers MAG, MIG and TIG welding of steel, aluminium and special materials as well as painting and sandblasting in its own facilities. Production from CAD design through procurement to the painted assembly is provided from a single source. Customers are found in radiation protection for medicine and research, in chemical and plant engineering, in mechanical and apparatus engineering, as well as in the automotive industry and nuclear power plant construction.
- Site
- Calw-Stammheim
- Processes
- CNC milling of lead, CNC turning of lead, Lead casting in any sizes and shapes, Bending of lead (press brake), MAG welding (pulsed), TIG welding (pulsed AC/DC), Soldering of lead, Professional bonding of lead and steel
- Materials
- Lead (ingot lead, rolled lead, lead sheets, cast lead), Steel, Aluminium, Special materials
- Certificates
- DIN EN ISO 3834-3, AD 2000 – Merkblatt HP0 / HP100R, EN 9606 – Certified Welders Part 1 and 2, Competent person for pressure vessels and pipelines according to BetrSichV, EN 10204-3.1 – Proper re-stamping of products, European Welding Engineer (EWF), AD 2000 Merkblatt HP0 / HP100R, EN 9606 certified welders Part 1 and 2, EN 10204-3.1 proper re-stamping, Competent person pressure vessels/pipelines (BetrSichV), ISO 9001
- Founded
- 1950
- Industries
- Radiation protection in medicine and research, Chemical plant engineering, Mechanical engineering, Apparatus engineering, Automotive industry, Nuclear power plant construction
- 01
CAD design and production support
- 02
Procurement of lead, sheet metal components from the region
- 03
Lead casting / lead sheet cutting
- 04
CNC milling and CNC turning, bending
- 05
Welding, soldering, joining of lead with steel
- 06
Sandblasting and painting
- 07
Assembly of finished assemblies
Materials and Processes
Lead (ingot lead, rolled lead, lead sheets, cast lead)
Core material of the company for lead casting, CNC machining and radiation protection applications; lead sheets from 0.5 to 100 mm material thickness.
Steel
Processed into load-bearing assemblies and joints with lead via MAG, MIG and TIG welding.
Aluminium
Welded using pulsed MAG and TIG processes for parts and assemblies.
Special materials
Machining and welding of customer-specific materials on request.
Locations
Calw-Stammheim
DEHeadquarters with production, painting facility and storage rooms
- Part weight / size
- Lead casting up to 500 kg, lead sheets up to 4 t processable
- Lot size
- Single piece to large series
- Materials
- Lead, steel, aluminium, special materials
- 2 melting furnaces each with approx. 800 kg capacity
- CNC lathe CMZ TD30M with sub-spindle and Y-axis
- CNC lathe DMG CTX 410
- Vertical machining center Tongil TNV80
- Vertical machining center Contur MMV 1500 F
- 8 pulsed MAG welding systems up to 450 A
- 8 pulsed TIG AC/DC welding systems up to 450 A
- Spot welding system Dalex 40 kVA
- Band saw Behringer HBE261 A Dynamic
- Kasto fully automatic band saw
- Press brake up to 2 m bending length
- 2 mobile lead sheet lifters up to 625 kg
- Guillotine shear up to 2.5 m (3 mm)
- Hydraulic press 40 t
- Sandblasting booth with extraction
- Painting facility for parts up to approx. 2.0 × 1.5 × 1.5 m
Components and Services
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| CNC milling of leadMachining | – | – | 4t (lead sheets up to 4t processable) | Single piece – Large series | Lead |
| CNC turning of leadMachining | – | – | – | Single-piece production – Series production | Lead |
| Lead casting in any sizes and shapesCasting | – | – | 500 kg (higher weights on request) | – | Lead |
| Bending of lead (press brake)Forming | – | 2m bending length | – | – | Lead |
| MAG welding (pulsed)Joining | – | – | – | – | Steel, Aluminium, Special materials, Lead, Lead-steel joints |
| TIG welding (pulsed AC/DC)Joining | – | – | – | – | Steel, Aluminium, Special materials, Lead |
| Soldering of leadJoining | – | – | – | – | Lead |
| Professional bonding of lead and steelJoining | – | – | – | – | Lead, Steel |
| Mechanical joining techniques (screwed, clamped, form-fit)Joining | – | – | – | – | Lead, Steel |
| Painting in in-house painting facilitySurface | – | 2.0m × 1.5m × 1.5m | – | – | Lead, Steel, Aluminium |
| Sandblasting with extractionSurface | – | – | – | – | Lead, Steel |
| Cutting of lead sheets (guillotine shear)Machining | – | 2.5m × 3mm material thickness | – | – | Lead |
| Band sawing/cuttingMachining | – | – | – | – | Lead, Steel, Aluminium |
| CAD design and production support (3D modelling, technical drawings)Engineering | – | – | – | – | – |
| Manufacture of X-ray cabins (complete assemblies)Assembly | – | – | – | 3 cabins per week | Lead, Steel |
| Hydraulic press workForming | – | – | – | – | Lead |
16 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Melting furnace for lead casting | – | 2 | each approx. 800kg capacity | – | Calw-Stammheim |
| CNC lathe with sub-spindle and Y-axis | CMZ TD30M | 1 | – | 2021 | Calw-Stammheim |
| CNC lathe | DMG CTX 410 | 1 | – | – | Calw-Stammheim |
| Vertical machining center (VMC) | Tongil TNV80 | 1 | – | – | Calw-Stammheim |
| Vertical machining center (VMC) | Contur MMV 1500 F | 1 | – | – | Calw-Stammheim |
| Pulsed MAG welding system | – | 8 | up to 450A | – | Calw-Stammheim |
| Pulsed TIG AC/DC welding system | – | 8 | up to 450A | – | Calw-Stammheim |
| Spot welding system | Dalex 40KvA | 1 | – | – | Calw-Stammheim |
| Band saw | Behringer HBE261 A Dynamic | 1 | – | – | Calw-Stammheim |
| Fully automatic band saw | Kasto | 1 | – | – | Calw-Stammheim |
| Press brake | – | 1 | up to 2m bending length | – | Calw-Stammheim |
| Mobile lead sheet lifter | – | 2 | up to 625kg | – | Calw-Stammheim |
| Guillotine shear | – | 1 | up to 2.5m (3mm) | – | Calw-Stammheim |
| Hydraulic press | – | 1 | 40t | – | Calw-Stammheim |
| Sandblasting booth with extraction | – | 1 | – | – | Calw-Stammheim |
| Painting facility | – | 1 | Parts up to approx. 2.0m x 1.5m x 1.5m | 2018 | Calw-Stammheim |
Additional services
Reference customers
Quality and Certifications
Qualified employees manufacture under strict quality and testing requirements, including dye penetrant testing. Certificates and approvals such as DIN EN ISO 3834-3, AD 2000 HP0/HP100R and certified welders according to EN 9606 demonstrate the welding and pressure vessel competence.
| Evidence | Calw-Stammheim |
|---|---|
| DIN EN ISO 3834-3 | |
| AD 2000 Merkblatt HP0 / HP100R | |
| EN 9606 certified welders Part 1 and 2 | |
| EN 10204-3.1 proper re-stamping | |
| Competent person pressure vessels/pipelines (BetrSichV) | |
| European Welding Engineer (EWF) | |
| ISO 9001 |
History
- 1950
Foundation of a mechanical workshop by Alfred Herrmann sen.
- 1971
Handover of the business to the sons Alfred Herrmann jun. and Peter Herrmann; founding of Alfred Herrmann Apparatebau GmbH
- 1972
New construction of the production hall
- 1977
Purchase of a lead furnace; since then approx. 100,000 kg of lead cast, machined and painted per year
- 1987
Commissioning of the first of today's two melting furnaces each with approx. 800 kg capacity; since then approx. 130,000 kg of lead per year
- 2006
Handover of the business to Dipl.-Ing. (FH) Dorothee Kreutner
- 2013
Expansion of the storage rooms for raw and finished materials
- 2015
Investment in the machine fleet, including a new CNC milling machine
- 2018
Construction of a painting facility annex for sale-ready assemblies
- 2020
Stephan Beck joins with a 50% share; acquisition of SMB Schweisstechnik GmbH
- 2021
Investment in a new CNC lathe with sub-spindle and Y-axis
- 2022
Start of production of X-ray cabins; increase to currently 3 cabins per week